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Journal articles on the topic 'Solid Surface Fluorescence'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Städe, Lars W., Thorbjørn T. Nielsen, Laurent Duroux, Reinhard Wimmer, Kyoko Shimizu, and Kim L. Larsen. "Synthesis and surface grafting of a β-cyclodextrin dimer facilitating cooperative inclusion of 2,6-ANS." Beilstein Journal of Organic Chemistry 11 (April 21, 2015): 514–23. http://dx.doi.org/10.3762/bjoc.11.58.

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A novel β-cyclodextrin (β-CD) dimer was synthesized and surface-grafted by click chemistry onto azide-functionalized quartz surfaces in order to introduce the cooperative features of the β-CD dimer to solid surfaces. Using NMR and fluorescence spectroscopy, it is shown that the free β-CD dimer forms a 1:1 complex with the fluorescent guest molecule, 2-anilinonaphthalene-6-sulfonic acid (otherwise known not to form 1:2 complexes with parent β-CD), with an apparent association constant of 7300 M−1. Further, it is shown using total internal reflection fluorescence spectroscopy that the inclusion of the fluorescent guest into both cavities of the β-CD dimer is maintained when grafted onto a solid surface.

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2

Rogacheva, Svetlana M., Anna B. Shipovskaya, Anna V. Strashko, Tamara I. Gubina, Elena V. Volkova, and Andrey G. Melnikov. "Polysaccharide Fibers as Matrices for Solid-Surface Fluorescence." International Journal of Polymer Science 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/183413.

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Fibers of cellulose diacetate (CDA) and chitosan (CTS) of polycationic and polybasic forms were tested as matrices for solid-surface fluorescence (SSF) of several fluorescent probes—eosin Y, trypaflavine, and pyrene. The morphology and surface potential of these matrices were examined. The influence of structural and energetic characteristics of the fibrous polysaccharide materials at SSF of the probes was shown. Fluorescence was studied in aqueous solutions of eosin Y and trypaflavine, in water-ethanolic and water-micellar surfactant media of pyrene, before and after dynamic sorption of the dyes on fibers and in the adsorbed state. The surface of CDA fiber was shown to be capable of sorbing trypaflavine from water and pyrene from water-micellar surfactant media of various types, so it can be a promising matrix for SSF of pyrene and trypaflavine and their chemical analogs. The Coulomb interactions were proposed to determine eosin Y and trypaflavine concentration on the surface of CTS matrices and the SSF of these probes. The CTS fibers were permeable to hydrophobic pyrene dissolved in an ethanol-water medium or solubilized in the micelles of ionic surfactants.

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3

Fu, Qing, Xiaolin Zhang, Peipei Yan, Shichao Wang, Xinzhi Wang, Yao Wang, Linjun Huang, et al. "SPR-Enhanced Fluorescence of Solid Organic Dye Films." Journal of Nanomaterials 2018 (August 23, 2018): 1–9. http://dx.doi.org/10.1155/2018/5268458.

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This paper presents strong fluorescence of spin-coated fluorescent solid organic dye films (SODF) enhanced by surface plasmonic resonance (SPR). In order to manifest the influence of SPR effect on enhancement of organic dye (OD) fluorescence, the organic dye embedded Ag@SiO2 fluorescent films were developed on the glass sheet substrate, in which Ag@SiO2 nanoparticles were embedded in the middle and organic dye was as upper layer. The morphology of the SODFs with and without Ag@SiO2 particles was studied by SEM and EDX, and the tests revealed that the Ag@SiO2 nanoparticles distributed evenly between glass sheet and OD layer. Optical properties were characterized by UV absorption and fluorescence spectroscopy; the lifetime of SODF was tested to discuss the mechanism of SPR enhancement of fluorescence. The results proved that the existence of Ag@SiO2 particles enhanced the fluorescence intensity for 7 times and thus proved the SPR effect for organic dye, especially when the organic dye is the solid films. Therefore, the most important is the creation that the SPR effect of Ag@SiO2 particles works very well under solid organic dye coverage.

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4

Xu Liang, 许良, 刘红婕 Liu Hongjie, 黄进 Huang Jin, 周信达 Zhou Xinda, 王凤蕊 Wang Fengrui, and 吴卫东 Wu Weidong. "Laser-induced time-resolved solid-surface fluorescence spectra system." High Power Laser and Particle Beams 24, no. 8 (2012): 1961–64. http://dx.doi.org/10.3788/hplpb20122408.1961.

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5

Balaei, S., and J. J. Aaron. "Solid-surface fluorescence analysis using a fibre-optic sensor." Analytica Chimica Acta 255, no. 2 (December 1991): 305–9. http://dx.doi.org/10.1016/0003-2670(91)80060-7.

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6

Hartner, K. C., J. W. Carr, and J. M. Harris. "Total Internal Reflection Fluorescence for Adsorbed Probe Molecule Studies of Liquid/Solid Interfacial Environments." Applied Spectroscopy 43, no. 1 (January 1989): 81–87. http://dx.doi.org/10.1366/0003702894201932.

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Total internal reflection fluorescence (TIRF) is developed as a surface selective method to allow the environment of a liquid/solid interface to be probed by fluorescent molecules which are adsorbed from solution. The method has been used to detect pyrene sorbed to an octadecylsilane-derivatized fused-silica plate and resolve its spectral emission so that vibronic intensity ratios can be calculated and the surface environment characterized. Adsorption equilibria of the fluorescent probe to the surface and the depth of penetration of the evanescent excitation beam provide the basis for predicting interference from probe molecules in the solution phase. These predictions were validated by replacing the solution overlaying the alkylated silica interface with saturated vapor and comparing the apparent surface environments.

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7

Zarybnicka, Lucie, Radka Bacovska, Zuzana Nadvornikova, Numan Almonasy, and Tomas Syrovy. "Application of Fluorescent Label in Polymer Nanofibers." Advances in Materials Science and Engineering 2017 (2017): 1–6. http://dx.doi.org/10.1155/2017/7583245.

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The electrospinning of fluorescent probe polyamide 6 doped by 7H-benzimidazo[2,1-a]benzo[de]isoquinolin-7-on is presented as a model processing photoluminescent nanofibers. The presence of the fluorescent probe in the fiber layers was confirmed by attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR); the surface nanofiber structure was described by high-resolution fluorescence microscope and scanning electron microscope images. The prepared nanofibers with the fluorescent label were further characterized by fluorescence spectroscopy, both in the solid phase and in the solution.

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8

Alesso, Magdalena, César A. Almeida, María C. Talio, and Liliana P. Fernández. "Metsulfuron-methyl determination in environmental samples by solid surface fluorescence." Microchemical Journal 139 (June 2018): 150–54. http://dx.doi.org/10.1016/j.microc.2018.02.023.

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9

Rogacheva, Svetlana M., Anna V. Strashko, Tamara I. Gubina, Anna B. Shipovskaya, Elena V. Volkova, Natalia A. Shilova, and Andrey G. Melnikov. "Solid-surface fluorescence of hydrophilic dyes on different polysaccharide matrices." Oriental Journal of Chemistry 30, no. 4 (December 31, 2014): 1557–63. http://dx.doi.org/10.13005/ojc/300414.

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10

Gautam, Saurabh, and Munishwar N. Gupta. "Solid state fluorescence of proteins in high throughput mode and its applications." F1000Research 2 (March 25, 2019): 82. http://dx.doi.org/10.12688/f1000research.2-82.v2.

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Direct comparison between fluorescence spectra of a sample in solution and solid state form is valuable to monitor the changes in protein structure when it is “dried” or immobilized on a solid surface (for biocatalysis or sensor applications). We describe here a simple method for recording fluorescence emission spectra of protein powders without using any dedicated accessory for solid samples in a high-throughput format. The 96-well plate used in our studies, was coated black from all the sides and the excitation and emission paths are identical and are from the top of the well. These two features minimize scatter and provide fairly noise free spectra. Even then the fluorescence intensity may be dependent upon many factors such as the extent of protein aggregation, morphology and sizes of the protein particles. Hence, (changes in) λmax emission may be a more reliable metric in the case of fluorescence spectra of proteins in the solid state. However, any large changes in the intensity could indicate changes in the microenvironment of the fluorophore. The fluorescence emission spectra were blue-shifted (4 to 9 nm), showed an increase in the intensity for different proteins studied upon lyophilization, and were similar to what has been reported by others using available commercial accessories for solid state samples. After validating that our method worked just as well as the dedicated accessories, we applied the method to compare the fluorescence emission spectra of α-chymotrypsin in solution, precipitated form, and the lyophilized powder form. We further examined the fluorescence emission spectra of green fluorescent protein (GFP) in solution and solid form. We also analyzed fluorescence resonance energy transfer (FRET) between tryptophan (Trp57) and the cyclic chromophore of GFP. These findings pointed towards the change in the microenvironment around the cyclic chromophore in GFP upon lyophilization.

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11

Saito, Yuko, Motohiro Kasuya, and Kazue Kurihara. "Evaluation of pH of Water between Solid Surfaces Using Surface Forces Apparatus Fluorescence Spectroscopy." Chemistry Letters 41, no. 10 (October 5, 2012): 1282–84. http://dx.doi.org/10.1246/cl.2012.1282.

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12

Ahmad, Musa, and Ramaier Narayanaswamy. "Optical fibre Al(III) sensor based on solid surface fluorescence measurement." Sensors and Actuators B: Chemical 81, no. 2-3 (January 2002): 259–66. http://dx.doi.org/10.1016/s0925-4005(01)00961-3.

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13

Hallgren, Richard C., and Claus Buchholz. "Improved solid surface rendering with the simulated fluorescence process (SFP) algorithm." Journal of Microscopy 166, no. 1 (April 1992): RP3—RP4. http://dx.doi.org/10.1111/j.1365-2818.1992.tb01501.x.

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14

Gautam, Saurabh, and Munishwar N. Gupta. "Solid state fluorescence of proteins in high throughput mode and its applications." F1000Research 2 (March 11, 2013): 82. http://dx.doi.org/10.12688/f1000research.2-82.v1.

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A simple method to determine fluorescence emission spectra of proteins in solid state is described. The available commercial accessories can only accommodate solid samples and hence do not allow a direct comparison between fluorescence spectra of a sample in solution and solid state form. Such comparisons are valuable to monitor the changes in protein structure when it is “dried” or immobilized on a solid surface (for biocatalysis or sensor applications). The commercially available accessories also do not allow working in a high throughput mode. We describe here a simple method for recording fluorescence emission spectra of protein powders without using any dedicated accessory for solid samples. This method works with a 96-well plate format. It enables the comparison of fluorescence spectra of a sample in a solid state with solution spectra, using comparable quantities of protein. The fluorescence emission spectra were blue-shifted (4 to 9 nm), showed an increase in the intensity for different proteins studied upon lyophilization, and were similar to what has been reported by others using available commercial accessories for solid state samples. After validating that our method worked just as well as the dedicated accessories, we applied the method to compare the fluorescence emission spectra of α-chymotrypsin in solution, precipitated form and the lyophilized powder form. α-Chymotrypsin in solution showed a λmax of 335 nm while a high-activity preparation of the same enzyme for non-aqueous media, known as enzyme precipitated and rinsed with propanol (EPRP), showed an increase in the intensity of the fluorescence emission spectra. However, there was a small red shift of 2 nm (λmax of 337 nm) in contrast to lyophilized powder which showed a λmax of 328 nm. This is due to a difference in the tertiary structure of the protein as well as the microenvironment of aromatic residues between the two preparations. We further examined the fluorescence emission spectra of green fluorescent protein (GFP) in solution and solid form. The relative fluorescence intensity of lyophilized GFP powder was decreased significantly to 17% as compared to GFP in solution, and showed a red shift of 4 nm in the emission λmax. It was found that fluorescence resonance energy transfer (FRET) between tryptophan (Trp57) and the cyclic chromophore of GFP was significantly diminished. This indicated the change in the microenvironment around the cyclic chromophore in GFP upon lyophilization.

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15

Sommer, Oliver, Daniel Moller, and Günter Wozniak. "Experimental and Numerical Investigation of Thin Liquid Layers at Curved Solid Edges." Key Engineering Materials 597 (December 2013): 51–62. http://dx.doi.org/10.4028/www.scientific.net/kem.597.51.

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The knowledge of the behavior of thin liquid layers on solid surfaces is of fundamental interest as far as basic research or applications like technical coating or lubrication processes are concerned. The subject is currently getting more important, particularly due to the increasing requirements of thin liquid layer functionalities. We therefore studied the development of the liquid layer thickness distribution field as well as the liquid layer disturbance propagation on a plane solid surface in the vicinity of a curved solid surface experimentally and numerically using LIF (Laser-induced Fluorescence) and CFD (Computational Fluid Dynamics), respectively. The investigation focusses on the influence of the initial layer thickness and solid surface curvature as well as liquid properties like viscosity and surface tension on the film behavior, especially close to solid edges. Experimental and numerical results are shown pointing out relevant quantities for disturbance propagation and validation.

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16

Yadav, Prashant, K. P. Prajitha, Vinita Dhaware, Mohan Subramani, Pattayil Joy, S. K. Asha, and Kadhiravan Shanmuganathan. "Dual responsive cellulose microspheres with high solid-state fluorescence emission." Colloids and Surfaces A: Physicochemical and Engineering Aspects 591 (April 2020): 124510. http://dx.doi.org/10.1016/j.colsurfa.2020.124510.

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17

Hoppe Alvarez, Laura, Andrey A. Rudov, Rustam A. Gumerov, Pia Lenssen, Ulrich Simon, Igor I. Potemkin, and Dominik Wöll. "Controlling microgel deformation via deposition method and surface functionalization of solid supports." Physical Chemistry Chemical Physics 23, no. 8 (2021): 4927–34. http://dx.doi.org/10.1039/d0cp06355j.

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The deformation of microgels deposited onto different substrates applying the three most common methods (spin-coating, drop-casting, and adsorption) was investigated by super-resolution fluorescence microscopy and molecular dynamics simulations.

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18

Wang, Lin, Cvetelin Vasilev, Daniel P. Canniffe, Luke R. Wilson, C. Neil Hunter, and Ashley J. Cadby. "Highly confined surface imaging by solid immersion total internal reflection fluorescence microscopy." Optics Express 20, no. 3 (January 27, 2012): 3311. http://dx.doi.org/10.1364/oe.20.003311.

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19

Tsuji, Kouichi, and Kazuaki Wagatsuma. "Solid Surface Density Determination Using the Glancing-Takeoff X-Ray Fluorescence Method." Japanese Journal of Applied Physics 35, Part 2, No. 11B (November 15, 1996): L1535—L1537. http://dx.doi.org/10.1143/jjap.35.l1535.

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20

Fidanza, J., and J. J. Aaron. "The analysis of pharmaceutical preparations using solid-surface room temperature photochemical-fluorescence." Journal of Pharmaceutical and Biomedical Analysis 5, no. 6 (January 1987): 619–23. http://dx.doi.org/10.1016/0731-7085(87)80074-2.

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21

Karaca, Banu Taktak, James Meyer, Sarah VanOosten, Mark Richter, and Candan Tamerler. "Modular Peptide-Based Hybrid Nanoprobes for Bio-Imaging and Bio-Sensing." MRS Proceedings 1621 (2014): 155–61. http://dx.doi.org/10.1557/opl.2014.368.

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ABSTRACTThe self-organization of functional proteins directly onto solid materials is attractive to a wide range of biomaterials and systems that need to accommodate a biological recognition element. In such systems, inorganic binding peptides may be an essential component due to their high affinity and selective binding features onto different types of solid surfaces. This study demonstrates a peptide-enabled self-assembly technique for designing well-defined protein arrays over a metal surface. To illustrate this concept, we designed a fusion protein that simultaneously displays a red fluorescence protein (DsRed-monomer), which is highly selective for copper ions, and a gold binding peptide AuBP. The peptide tag, AuBP, self-directs the organization of DsRed-monomer protein onto a gold surface and forms arrays built upon an efficient control of the organic/inorganic interface at the molecular level. The peptide-assisted design offers a modular approach for fabrication of fluorescent-based protein arrays with copper ion sensing ability.

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22

Tzeng, H. M., A. C. Munce, and L. Crawforth. "Quantitative Visualization of Surface Flows on Rotating Disks." Journal of Fluids Engineering 116, no. 3 (September 1, 1994): 494–98. http://dx.doi.org/10.1115/1.2910304.

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A novel scheme for the visualization of surface flows is developed. It utilizes the strong adhesion forces between micrometer-sized particles and solid surfaces to register the surface streaklines, or equivalently, streamlines for steady flows. Fluorescent particles are used to allow the spectral separation of particle fluorescence emission from morphology-related elastic light scattering from the surface. This scheme was employed to investigate the surface flow on rotating disks in a disk-drive-like environment. Trajectories of the streaklines were digitized and quantitatively analyzed using image processing for orientation and spatial distribution. The surface streaklines provide information about the boundary layers on the disk while the spreading angle of the jets in the self-pumped through-flow reveal details about the bulk flow outside the boundary layer. The spiral angle of the streaklines over a major portion of the disk surface was found to be in good agreement with the theory for laminar Ekman boundary layers. The spreading of the streaklines, reflecting the width of the self-pumped jets emanating from holes in the hub, was found to increase linearly with radius.

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23

Kaneyoshi, T., T. Ishihara, H. Yoshioka, M. Motoyama, S. Fukushima, K. Hayashi, J. Kawai, K. Taniguchi, S. Hayakawa, and Y. Gohshi. "Material analysis end-station of the Hyogo-ken beamline at SPring-8." Journal of Synchrotron Radiation 5, no. 3 (May 1, 1998): 509–11. http://dx.doi.org/10.1107/s0909049598001502.

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Plans to construct surface-analysis equipment which will be placed on beamline BL24XU of SPring-8 are presented. There are three experimental hutches in BL24XU, which are available simultaneously by using diamond monochromators as beam splitters. The purpose of the surface-analysis equipment is the simultaneous measurement of fluorescent and diffracted X-rays in grazing-incidence geometry. The instrument is equipped with a solid-state detector (SSD) and a flat position-sensitive proportional counter (PSPC) combined with analysing crystals for X-ray fluorescence (XRF) analysis. A curved PSPC and the goniometer that mounts the SSD used for XRF are also installed for X-ray diffraction. X-ray fluorescence holography and polarized X-ray emission spectroscopy modes are available, so three-dimensional images of atomic configurations and also the anisotropic structure of materials will be studied.

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24

Rogacheva, Svetlana M., Elena V. Volkova, Milena I. Otradnova, Tamara I. Gubina, and Anna B. Shipovskaya. "Solvent Effect on the Solid-Surface Fluorescence of Pyrene on Cellulose Diacetate Matrices." International Journal of Optics 2018 (June 11, 2018): 1–6. http://dx.doi.org/10.1155/2018/3012081.

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The effect of the solvent nature (acetonitrile, ethanol, dimethyl sulfoxide, and dioxane) and its concentration on the fluorescence intensity of pyrene sorbed on the cellulose diacetate (CDA) film from a water-organic solution was studied. Dimethyl sulfoxide and ethanol are shown to be the most effective solvent additives for pyrene solid-surface fluorescence (SSF). The maximum SSF signal of pyrene was found upon sorption of the substance from aqueous media containing 1.2-4.2 vol% DMSO. For the pyrene quantitation the concentration dependence of its SSF intensity at the maximum of the spectrum at λem = 394 nm and λexp = 320 nm was plotted. The dependence has a linear character in the pyrene concentration range 2·10−6 - 2·10-8 g/L, and the limit of pyrene detection is 2·10-11 g/L. The possibility of determining benzo(a)pyrene using SSF technique with the CDA matrix is proved. The proposed method is promising for use in environmental monitoring of polycyclic aromatic hydrocarbons.

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25

Hui, S. W., and H. Yu. "Molecular organization in phospholipid monolayer domains by electron diffraction." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (August 1992): 1016–17. http://dx.doi.org/10.1017/s0424820100129711.

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In the LC/LE phase of phospholipid monolayers at the air/water interface, solid and fluid domains may be visualized by epi-fluorescence microscopy. Supposedly, solid domains are distinguished by the absence of fluorescence due to the preferential partitioning of most fluorescent dyes to the surrounding fluid phase lipids. The size, shape and stability of these domains are governed by molecular dipole-dipole interaction and inter-phase line tension. While x-ray and neutron diffractions offer some global average molecular packing information on a large sampling area of monolayers, selected area electron diffraction may provide local structural information within and along individual domains.Dipalmitoyl-monomethyl-phosphatidylethanolamine [DP(Me)PE] and dipalmitoyldimethyl-phosphatidylethanolamine [DP(Me)PE] monolayers were spread on an environmentally controlled Langmuir trough. The monolayers were adjusted to the LE/LC phase by a servo-motor-driven Teflon bar moving along the surface of the trough.

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26

Cooper, Justin T., and Joel M. Harris. "Imaging Fluorescence-Correlation Spectroscopy for Measuring Fast Surface Diffusion at Liquid/Solid Interfaces." Analytical Chemistry 86, no. 15 (July 9, 2014): 7618–26. http://dx.doi.org/10.1021/ac5014354.

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27

Bordo, V. G. "Spectrum of resonance fluorescence excited by surface polaritons at a gas-solid interface." Optics Communications 101, no. 1-2 (August 1993): 37–42. http://dx.doi.org/10.1016/0030-4018(93)90319-z.

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28

Fogorasi, Magdalena, and Elisabeth Heine. "Spectroscopic methods of studying enzyme action in wool fibre." Open Chemistry 4, no. 4 (December 1, 2006): 786–97. http://dx.doi.org/10.2478/s11532-006-0045-x.

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AbstractEnzymes may be used to develop an environmentally friendly alternative to the conventional polluting technologies in textile finishing. The action of the unlabeled and fluorescent labeled proteolytic enzymes subtilisin and trypsin on wool was examined. Scanning electron micrographs and a diffusion study, based on fluorescence microscopy, localized the enzymatic attack on the fiber. A kinetic study was carried out by monitoring the amino acid content of the treatment liquor.Enzymatic action is not confined to the fiber surface. To limit attack to the surface and reduce wool damage new treatment methods such as enzyme immobilization onto a solid carrier must be investigated.

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29

Tozuka, Yuichi, Emi Tashiro, Etsuo Yonemochi, Toshio Oguchi, and Keiji Yamamoto. "Solid-State Fluorescence Study of Naphthalene Adsorption on Porous Material." Journal of Colloid and Interface Science 248, no. 2 (April 2002): 239–43. http://dx.doi.org/10.1006/jcis.2001.8142.

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30

NARAYANAN, JANAKY, E. MENDES, and C. MANOHAR. "VESICLE TO MICELLE TRANSITION DRIVEN BY SURFACE SOLID-FLUID TRANSITION." International Journal of Modern Physics B 16, no. 01n02 (January 20, 2002): 375–82. http://dx.doi.org/10.1142/s0217979202009895.

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This paper reviews the solution behavior of cetyltrimethylammonium hydroxynaphthalene carboxylate (CTAHNC), which has the unique feature of undergoing a transition from vesicle to worm-like micellar phase in three different ways, namely, increase in temperature, addition of a surfactant and on shearing. Fluorescence anisotropy, NMR, rheology, small angle neutron scattering studies etc gave evidence of the vesicle-micelle transition. CTAHNC can be looked upon as a complex formed by two oppositely charged surfactants (CTA+ and HNC-). This ion pair effectively acts as a double-chain lipid and has a tendency to form vesicles. On increasing the temperature, and/or adding single chain surfactants of shearing, the complex dissociates which changes the curvature energy of the surface. This leads to a 'surface melting' that brings forth the vesicle-micelle transition.

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31

Choudhary, Eric, Jeyavel Velmurugan, James M. Marr, James A. Liddle, and Veronika Szalai. "Optical Fluorescence Microscopy for Spatially Characterizing Electron Transfer across a Solid-Liquid Interface on Heterogeneous Electrodes." MRS Advances 1, no. 42 (2016): 2867–72. http://dx.doi.org/10.1557/adv.2016.289.

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ABSTRACTHeterogeneous catalytic materials and electrodes are used for (electro)chemical transformations, including those important for energy storage and utilization.1, 2 Due to the heterogeneous nature of these materials, activity measurements with sufficient spatial resolution are needed to obtain structure/activity correlations across the different surface features (exposed facets, step edges, lattice defects, grain boundaries, etc.). These measurements will help lead to an understanding of the underlying reaction mechanisms and enable engineering of more active materials. Because (electro)catalytic surfaces restructure with changing environments,1 it is important to perform measurements in operando. Sub-diffraction fluorescence microscopy is well suited for these requirements because it can operate in solution with resolution down to a few nm. We have applied sub-diffraction fluorescence microscopy to a thin cell containing an electrocatalyst and a solution containing the redox sensitive dye p-aminophenyl fluorescein to characterize reaction at the solid-liquid interface. Our chosen dye switches between a nonfluorescent reduced state and a one-electron oxidized bright state, a process that occurs at the electrode surface. This scheme is used to investigate the activity differences on the surface of polycrystalline Pt, in particular to differentiate reactivity at grain faces and grain boundaries. Ultimately, this method will be extended to study other dye systems and electrode materials.

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32

Wong, A. L., J. M. Harris, and D. B. Marshall. "Measurements of energy dispersion at liquid–solid interfaces: Fluorescence quenching of pyrene bound to fumed silica." Canadian Journal of Physics 68, no. 9 (September 1, 1990): 1027–34. http://dx.doi.org/10.1139/p90-145.

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The observation of a stretched exponential response in chemical kinetics at solid–liquid interfaces is an indicator of solid surface disorder. In this contribution, we review earlier relaxation kinetics studies of solid surface disorder and the statistical criteria analyzing kinetic data that do not fit single exponential. We draw on these concepts to interpret the fluorescence decay kinetics of pyrene covalently attached to the surface of fumed silica particles that are suspended in methanol. This surface probe exhibits stretched exponential behavior of the form f(t) = exp[−(kt)β] in the decay of its excited-state populations. The addition of iodine quencher increases the average decay rate, but does not alter the nonlinear exponent β. These results, along with the diffusional length of the iodine quencher, the photophysics of the probe, and the chemistry of the interface, indicate that the kinetic inhomogeneity is dominated by dispersion of surface energies, rather than by diffusional excursions of the quencher on a fractally aggregated surface. Numerical Laplace inversion of the experimental decay curves is used to determine the distribution of rates which reveal that the quenching process is inhomogeneous and correlated with the unquenched decay rates of the probe.

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33

Kwong, Huey Chong, Ai Jia Sim, C. S. Chidan Kumar, Ching Kheng Quah, Suchada Chantrapromma, S. Naveen, and Ismail Warad. "Synthesis, spectroscopic and Hirshfeld surface analysis and fluorescence studies of (2E,2′E)-3,3′-(1,4-phenylene)bis[1-(4-hydroxyphenyl)prop-2-en-1-one] N,N-dimethylformamide disolvate." Acta Crystallographica Section E Crystallographic Communications 74, no. 6 (May 22, 2018): 835–39. http://dx.doi.org/10.1107/s2056989018007429.

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In the bischalcone molecule of the title compound, C24H18O4·2C3H7NO, the central benzene and terminal hydroxyphenyl rings form a dihedral angle of 14.28 (11)° and the central C=C double bond adopts a trans configuration. In the crystal, the bischalcone and solvate molecules are interconnected via O—H...O hydrogen bonds, which were investigated by Hirshfeld surface analysis. Solid-state fluorescence was measured at λex = 4400 Å. The emission wavelength appeared at 5510 Å, which corresponds to yellow light and the solid-state fluorescence quantum yield (F f) is 0.18.

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34

Monti, Donato, Manuela Stefanelli, Michele Raggio, Noemi Colozza, Mariano Venanzi, Raffaella Lettieri, Loredana Luvidi, et al. "Solid state deposition of chiral amphiphilic porphyrin derivatives on glass surface." Journal of Porphyrins and Phthalocyanines 15, no. 11n12 (November 2011): 1209–19. http://dx.doi.org/10.1142/s1088424611004117.

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Herein, we present a straightforward method to achieve optically active films based on porphyrin derivatives. The introduction of an aminoacid functionality on the porphyrin platform confers to the macrocycle both the amphiphilic and chiral character exploited for its solvent-promoted self-aggregation leading to the formation of chiral supramolecular architectures. These ordered suprastructures have the propensity to spontaneously layer as solid films on glass surfaces. The deposited material has been characterized by means of UV-visible, fluorescence emission, circular dichroism spectroscopy and AFM. The reported studies show once more how the stereochemical information stored on a single porphyrin framework can induce the formation of supramolecular chiral architectures, in solution, as well as in solid state. Furthermore, slight modifications on the porphyrin skeleton can influence the aggregation process and the structural features of the final assemblies, leading to solid surfaces featuring different morphologies. These combined aspects can be of great importance for the achievement of solid state chemical sensors with stereoselective properties.

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35

Emaminejad, Sam, Mehdi Javanmard, Chaitanya Gupta, Shuai Chang, Ronald W. Davis, and Roger T. Howe. "Tunable control of antibody immobilization using electric field." Proceedings of the National Academy of Sciences 112, no. 7 (February 3, 2015): 1995–99. http://dx.doi.org/10.1073/pnas.1424592112.

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The controlled immobilization of proteins on solid-state surfaces can play an important role in enhancing the sensitivity of both affinity-based biosensors and probe-free sensing platforms. Typical methods of controlling the orientation of probe proteins on a sensor surface involve surface chemistry-based techniques. Here, we present a method of tunably controlling the immobilization of proteins on a solid-state surface using electric field. We study the ability to orient molecules by immobilizing IgG molecules in microchannels while applying lateral fields. We use atomic force microscopy to both qualitatively and quantitatively study the orientation of antibodies on glass surfaces. We apply this ability for controlled orientation to enhance the performance of affinity-based assays. As a proof of concept, we use fluorescence detection to indirectly verify the modulation of the orientation of proteins bound to the surface. We studied the interaction of fluorescently tagged anti-IgG with surface immobilized IgG controlled by electric field. Our study demonstrates that the use of electric field can result in more than 100% enhancement in signal-to-noise ratio compared with normal physical adsorption.

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Alesso, Magdalena, María Carolina Talio, and Liliana P. Fernández. "Solid surface fluorescence methodology for fast monitoring of 2,4-dichlorophenoxyacetic acid in seed samples." Microchemical Journal 135 (November 2017): 60–65. http://dx.doi.org/10.1016/j.microc.2017.07.014.

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37

Eroglu, A. "Fiber optic sensors using novel substrates for hydrogen sulfide determination by solid surface fluorescence." Talanta 53, no. 1 (October 2, 2000): 89–101. http://dx.doi.org/10.1016/s0039-9140(00)00377-5.

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38

Mounier, S., G. Nicolodelli, R. Redon, and D. M. B. P. Milori. "Direct solid surface fluorescence spectroscopy of standard chemicals and humic acid in ternary system." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 177 (April 2017): 79–85. http://dx.doi.org/10.1016/j.saa.2017.01.017.

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39

Yang, Sheng, Changyao Wang, Changhui Liu, Yijun Wang, Yue Xiao, Jishan Li, Yinhui Li, and Ronghua Yang. "Fluorescence Modulation by Absorbent on Solid Surface: An Improved Approach for Designing Fluorescent Sensor." Analytical Chemistry 86, no. 15 (July 10, 2014): 7931–38. http://dx.doi.org/10.1021/ac5019292.

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40

Sun, Xiao-Ying, Hao Chen, Hong Gao, and Xiang-Qun Guo. "Screening of Tetracycline Residues in Fish Muscles by CCD Camera-Based Solid-Surface Fluorescence." Journal of Agricultural and Food Chemistry 54, no. 26 (December 2006): 9687–95. http://dx.doi.org/10.1021/jf0622580.

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41

Talio, María Carolina, Magdalena Alesso, Mariano Acosta, María Gimena Acosta, Marta O. Luconi, and Liliana P. Fernández. "Caffeine monitoring in biological fluids by solid surface fluorescence using membranes modified with nanotubes." Clinica Chimica Acta 425 (October 2013): 42–47. http://dx.doi.org/10.1016/j.cca.2013.07.008.

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42

Williams, Richard J., Jose Mauro Peralta, Victor C. W. Tsang, Narasimhachari Narayanan, Guillermo A. Casay, Malgorzata Lipowska, Lucjan Strekowski, and Gabor Patonay. "Near-Infrared Heptamethine Cyanine Dyes: A New Tracer for Solid-Phase Immunoassays." Applied Spectroscopy 51, no. 6 (June 1997): 836–43. http://dx.doi.org/10.1366/0003702971941115.

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Near-infrared (near-IR) fluorescence has been used to develop a solid-phase immunoassay that detects trace amounts of human immunoglobulin (HuIgG). Various concentrations of HuIgG bound to a nitrocellulose surface were determined from the fluorescence generated by near-IR labeled goat anti-human antibody (GAHG) bound to the HuIgG. The GAHG was labeled with a heptamethine cyanine fluorophore that has spectral properties in the near-IR region (above 780 nm). These fluorophores are versatile because they can be modified for several bioanalytical applications. Fluorescence was detected with a near-IR fluorescence instrument previously developed in the laboratory. Two cyanine fluorophore labels were evaluated for the ability to selectively bind to GAHG on a nitrocellulose matrix with a minimal amount of background interference. After the most appropriate near-IR fluorophore was selected, the labeling of GAHG was optimized under aqueous conditions. The most effective GAHG–dye conjugates were used to develop an immunoassay to detect various concentrations of HuIgG. The results are presented, here. Solutions of HuIgG with concentrations as low as 10−10 molar have been detected with a minimum of interference.

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43

Fossati, Stefan, Simone Hageneder, Samia Menad, Emmanuel Maillart, and Jakub Dostalek. "Multiresonant plasmonic nanostructure for ultrasensitive fluorescence biosensing." Nanophotonics 9, no. 11 (July 30, 2020): 3673–85. http://dx.doi.org/10.1515/nanoph-2020-0270.

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AbstractA novel metallic nanostructure for efficient plasmon-enhanced fluorescence readout of biomolecular binding events on the surface of a solid sensor chip is reported. It is based on gold multiperiod plasmonic grating (MPG) that supports spectrally narrow plasmonic resonances centered at multiple distinct wavelengths. They originate from diffraction coupling to propagating surface plasmons (SPs) forming a delocalized plasmonic hotspot associated with enhanced electromagnetic field intensity and local density of optical states at its surface. The supported SP resonances are tailored to couple with the excitation and emission transitions of fluorophores that are conjugated with the biomolecules and serve as labels. By the simultaneous coupling at both excitation and emission wavelengths, detected fluorescence intensity is enhanced by the factor of 300 at the MPG surface, which when applied for the readout of fluorescence immunoassays translates to a limit of detection of 6 fM within detection time of 20 min. The proposed approach is attractive for parallel monitoring of kinetics of surface reactions in microarray format arranged on a macroscopic footprint. The readout by epi-fluorescence geometry (that inherently relies on low numerical aperture optics for the imaging of the arrays) can particularly take advantage of the reported MPG. In addition, the proposed MPG nanostructure can be prepared in scaled up means by UV-nanoimprint lithography for future practical applications.

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Harada, Jun, Toshikatsu Fujiwara, and Keiichiro Ogawa. "Crucial Role of Fluorescence in the Solid-State Thermochromism of Salicylideneanilines." Journal of the American Chemical Society 129, no. 51 (December 2007): 16216–21. http://dx.doi.org/10.1021/ja076635g.

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45

Healy, K. E., C. H. Thomas, A. Rezania, P. J. McKeown, C. D. McFarland, and J. G. Steele. "Correlative TOF-SIMS and fluorescence microscopy analyses of surfaces used to control mammalian cell function." Proceedings, annual meeting, Electron Microscopy Society of America 54 (August 11, 1996): 1044–45. http://dx.doi.org/10.1017/s0424820100167688.

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A common theme in engineering surfaces for biomedical materials and devices is the control of cell behavior at the material-tissue interface. Multiple analytical techniques are required to fully characterize a material surface both prior to and after exposure to the biological environment. In addition, a full cadre of microscopy techniques are essential for understanding cell behavior to these surface engineered materials. At the heart of understanding the mechanisms that control cell function on solid materials is the adsorption of serum proteins, which ultimately dictates how a cell responds to a material. A great deal of complexity is introduced into the system by adsorbed proteins, since there are over 200 proteins in human blood, and that post adsorption changes in conformation could lead to altered function. Until recently it has been extremely difficult to correlate cell behavior with the initial surface chemistry of a material and the type of protein adsorbed to the surface.

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46

Cherry, Richard J., Keith M. Wilson, Kathy Triantafilou, Peter O'Toole, Ian E. G. Morrison, Patricia R. Smith, and Nelson Fernández. "Detection of Dimers of Dimers of Human Leukocyte Antigen (HLA)–DR on the Surface of Living Cells by Single-Particle Fluorescence Imaging." Journal of Cell Biology 140, no. 1 (January 12, 1998): 71–79. http://dx.doi.org/10.1083/jcb.140.1.71.

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The technique of single-particle fluorescence imaging was used to investigate the oligomeric state of MHC class II molecules on the surface of living cells. Cells transfected with human leukocyte antigen (HLA)–DR A and B genes were labeled at saturation with a univalent probe consisting of Fab coupled to R-phycoerythrin. Analysis of the intensities of fluorescent spots on the cell surface revealed the presence of single and double particles consistent with the simultaneous presence of HLA-DR heterodimers and dimers of dimers. The proportion of double particles was lower at 37°C than at 22°C, suggesting that the heterodimers and dimers of dimers exist in a temperature-dependent equilibrium. These results are discussed in the context of a possible role for HLA-DR dimers of dimers in T cell receptor–MHC interactions. The technique is validated by demonstrating that fluorescence imaging can distinguish between dimers and tetramers of human erythrocyte spectrin deposited from solution onto a solid substrate. The methodology will have broad applicability to investigation of the oligomeric state of immunological and other membrane-bound receptors in living cells.

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47

Chen, Xing, Da Fu Cui, H. Li, H. Y. Cai, J. H. Sun, and L. L. Zhang. "Microfluidic Device for Fluorescence Immunoassays by Using Porous Matrix." Advanced Materials Research 216 (March 2011): 645–48. http://dx.doi.org/10.4028/www.scientific.net/amr.216.645.

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The present work presents the availability of using porous matrix in microfluidic devices as a solid phase matrix for immunoassays. Porous matrixes on the surface of the microchannels were microfabricated by MEMS technology and electrochemical etching technology, which were coated on the wall of the rectangular microchannel in the microdevices to provide a surface-enlarging matrix. The microfabrication process of porous matrixes was investigated and optimized. Then the surface morphology of the porous matrixes was characterized by SEM. Both direct method and dual-antibody sandwich method were used for fluorescence immunoassays. Using sandwich immunoassay, 6.25μg/mL - 25μg/mL human IgG in real samples have been detected with a correlation coefficient of 0.9773. These porous microdevices have shown some advantages over its large-scale counterparts, including lower sample and reagent consumption, lower cost, less analytical time and so on, which enables detection for clinical testing.

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48

Babamiri, Bahareh, Rahman Hallaj, and Abdollah Salimi. "Solid surface fluorescence immunosensor for ultrasensitive detection of hepatitis B virus surface antigen using PAMAM/CdTe@CdS QDs nanoclusters." Methods and Applications in Fluorescence 6, no. 3 (June 20, 2018): 035013. http://dx.doi.org/10.1088/2050-6120/aac8f7.

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49

Bello, J. M., and R. J. Hurtubise. "Room-Temperature Luminescence Properties of p-Aminobenzoic Acid and 4-Phenylphenol Adsorbed on α-Cyclodextrin/NaCl Mixtures." Applied Spectroscopy 42, no. 4 (May 1988): 619–24. http://dx.doi.org/10.1366/0003702884429319.

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The solid-surface fluorescence and phosphorescence quantum yield values and phosphorescence lifetime values were obtained for p-aminobenzoic acid (PABA) and 4-phenylphenol adsorbed on α-cyclodextrin/NaCl mixtures. From the luminescence quantum yield and phosphorescence lifetime data, the triplet formation efficiency values, the phosphorescence rate constants, and the rate constants for radiationless transition from the triplet state were determined for PABA and 4-phenylphenol on α-cyclodextrin/NaCl mixtures. In addition, the percentages of radiative and nonradiative transitions were calculated for the two compounds. The various luminescence parameters obtained in this work provided important insights into the analyte/α-cyclodextrin substrate interactions responsible for the observed solid-surface room-temperature fluorescence (RTF) and phosphorescence (RTP). Furthermore, the RTF and RTP intensities of PABA and 4-phenylphenol were obtained from several α-cyclodextrin/NaCl mixtures. These data showed the importance of the initial wet chemistry in the sample preparation procedure.

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REYES, J., P. BARRALES, and A. DIAZ. "Development of a solid surface fluorescence-based sensing system for aluminium monitoring in drinking water." Talanta 65, no. 5 (March 15, 2005): 1203–8. http://dx.doi.org/10.1016/j.talanta.2004.08.045.

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